Home / 131,428.70-197,121.45-36,665.36

Finding the Fourth Proportional to 131,428.70, 197,121.45 and 36,665.36

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Solution

The fourth proportional to 131,428.70, 197,121.45 and 36,665.36 is: 54,992.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,428.70 : 197,121.45 = 36,665.36 : x
  2. Step 2: Convert to fraction form
    131,428.70/197,121.45 = 36,665.36/x
  3. Step 3: Cross multiply
    131,428.70x = 197,121.45 × 36,665.36
  4. Step 4: Simplify right side
    131,428.70x = 7,227,528,927.97
  5. Step 5: Solve for x
    x = 7,227,528,927.97/131,428.70
  6. Step 6: Final answer
    x = 54,992.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.